The article is extremely misleading.
The research studied ONLY people with a TBI.......NOT the delayed onset ptsd community as a whole. This is why their "conclusion" that people with delayed onset ptsd have had a TBI is not only misleading but completely false. The data is misinterpreted.
I don't see the original research, just this half-assed completely false article written by someone who doesn't know how to interpret scientific data-----my best guess is that they tried to interpret data to fit their false premise.
Re-read it with this in mind and you'll see that their conclusions are completely and totally wrong.
If you want to know if TBI is a major contributor to delayed onset ptsd, you can't just study those with both a TBI and PTSD. You have to study the delayed onset community as a whole, those who have and have not had a TBI.
In addition, they only do a half-assed reference so you don't even know what article/study is being referenced.